Erwin Schrödinger might have abused children because why not, "everything is a wave after all. does it really matter what one wave does to another?"

https://en.wikipedia.org/wiki/Erwin_Schr%C3%B6dinger#Sexual_...

Both can be true that Leaders can use god to justify their terrible actions and Scientists can use theories/philosophies to justify their terrible actions too.

Justification of any evil action to consider oneself as a good guy might be a human quality.

That being said, Majority of wars/conflicts in the past have sadly been because of religions and that number doesn't seem to be stopping and is still continuing to this day sadly.